CN202383538U - Heating return circuit of wheel axle box of wind power pitch-regulated system - Google Patents
Heating return circuit of wheel axle box of wind power pitch-regulated system Download PDFInfo
- Publication number
- CN202383538U CN202383538U CN2011205336523U CN201120533652U CN202383538U CN 202383538 U CN202383538 U CN 202383538U CN 2011205336523 U CN2011205336523 U CN 2011205336523U CN 201120533652 U CN201120533652 U CN 201120533652U CN 202383538 U CN202383538 U CN 202383538U
- Authority
- CN
- China
- Prior art keywords
- wind power
- normally open
- open contactor
- power pitch
- axle box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Wind Motors (AREA)
Abstract
The utility model discloses a heating return circuit of a wheel axle box of a wind power pitch-regulated system. The heating return circuit is connected to a back-up direct current power supply of the wind power pitch-regulated system, the back-up direct current power supply is sequentially connected with a temperature monitor, a first normally open contactor and a second normally open contactor, and the second normally open contactor is connected with a first heater and a second heater; the first heater and the second heater are connected in parallel; the temperature monitor comprises a temperature sensor, a first output end and a second output end, the first output end is connected with a third normally open contactor, and the second output end is connected with a time relay; and an output end of the temperature monitor is connected with the second normally open contactor. The utility model has the beneficial effects that the heating return circuit is effectively connected to the back-up direct current power supply of the wind power pitch-regulated system, and the wheel axle box is fully heated before the wind power pitch-regulated system is started so as to guarantee the safety of the wind power pitch-regulated system.
Description
Technical field
The utility model relates to a kind of heating circuit of wheel axle box of wind power pitch-controlled system.
Background technology
Wind-driven power generation control system is very high to the requirement of environment temperature, and the storage temperature of the temperature monitor that adopts in the existing at present variable blade control system is a zero degree, and this temperature can't meet the demands in northern most of areas.The temperature in the north is very low, if use the temperature monitor of storage temperature as zero degree, in temperature is lower than the environment of zero degree, works; Temperature monitor can be malfunctioning; Cause whole variable blade control system to stop, directly having influenced whole blower fan generating, the consequence that causes like this is very serious.
Therefore, before starting, should carry out tight detection and heating fully to environment temperature.The start and stop of wind-power electricity generation The whole control system are very loaded down with trivial details processes, and the spent time is quite of a specified duration, have so just reduced the work efficiency of wind-power electricity generation.
The utility model content
For overcoming above-mentioned prior art defective, the purpose of the utility model is to provide a kind of heating circuit of wheel axle box of wind power pitch-controlled system.
The purpose of the utility model, will realize through following technical scheme:
A kind of heating circuit of wheel axle box of wind power pitch-controlled system; Be connected in the reserve direct supply of wind power pitch-controlled system; Connect temperature monitor, first normally open contactor, second normally open contactor on the said reserve direct supply successively, said second normally open contactor is connected with primary heater, secondary heater; Said first, second well heater parallel connection; Said temperature monitor comprises temperature sensor and first output terminal and second output terminal, and said first output terminal is connected with the 3rd normally open contactor, and said second output terminal is connected with the time relay; The temperature monitor output terminal is connected with second normally open contactor.
The beneficial effect of the utility model is mainly reflected in: effectively be connected in the reserve direct supply of wind power pitch-controlled system, before wind power pitch-controlled system starts, the wheel axle box heated fully, guarantee the security of wind power pitch-controlled system.
Description of drawings
Below in conjunction with accompanying drawing the utility model technical scheme is described further:
Fig. 1: the heating circuit synoptic diagram of the wheel axle box of the utility model wind power pitch-controlled system.
Embodiment
The utility model has disclosed a kind of heating circuit of wheel axle box of wind power pitch-controlled system; As shown in Figure 1; The heating circuit of the wheel axle box of wind power pitch-controlled system; Be connected in the reserve direct supply of wind power pitch-controlled system, connect temperature monitor, first normally open contactor, second normally open contactor on the said reserve direct supply successively, said second normally open contactor is connected with primary heater, secondary heater; Said first, second well heater parallel connection; Said temperature monitor comprises temperature sensor and first output terminal and second output terminal, and said first output terminal is connected with the 3rd normally open contactor, and said second output terminal is connected with the time relay; The temperature monitor output terminal is connected with second normally open contactor.
Low form monitoring temperature relay is monitored the environment temperature in the axle box through the PT100 temperature sensor in real time, and when temperature during greater than 5 ℃, contactor 4K2 coil gets electric, the contact closing of contact; When temperature was lower than 5 ℃, contactor 4K3 coil got electric, the contact closing of contact, and well heater 4E1 and 4E2 begin heating; When treating temperature greater than 5 ℃, time relay 4K1 coil gets electric, delays time after 1 hour; The closing of contact, contactor 4K2 coil gets electric, the contact closing of contact.
All simple modification or equivalents that the utility model the foregoing description is carried out all should be regarded as being included within the scope of present patent application protection.
Claims (1)
1. the heating circuit of the wheel axle box of a wind power pitch-controlled system; Be connected in the reserve direct supply of wind power pitch-controlled system; It is characterized in that: connect temperature monitor, first normally open contactor, second normally open contactor on the said reserve direct supply successively, said second normally open contactor is connected with primary heater, secondary heater; Said first, second well heater parallel connection; Said temperature monitor comprises temperature sensor and first output terminal and second output terminal, and said first output terminal is connected with the 3rd normally open contactor, and said second output terminal is connected with the time relay; The temperature monitor output terminal is connected with second normally open contactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205336523U CN202383538U (en) | 2011-12-19 | 2011-12-19 | Heating return circuit of wheel axle box of wind power pitch-regulated system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205336523U CN202383538U (en) | 2011-12-19 | 2011-12-19 | Heating return circuit of wheel axle box of wind power pitch-regulated system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202383538U true CN202383538U (en) | 2012-08-15 |
Family
ID=46632030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205336523U Expired - Lifetime CN202383538U (en) | 2011-12-19 | 2011-12-19 | Heating return circuit of wheel axle box of wind power pitch-regulated system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202383538U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103163913A (en) * | 2011-12-19 | 2013-06-19 | 苏州能健电气有限公司 | Heating circuit of wheel shaft box of wind power pitch system |
-
2011
- 2011-12-19 CN CN2011205336523U patent/CN202383538U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103163913A (en) * | 2011-12-19 | 2013-06-19 | 苏州能健电气有限公司 | Heating circuit of wheel shaft box of wind power pitch system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120815 |
|
| CX01 | Expiry of patent term |